Two stage downlink control information for channel state information reporting configurations
A two-stage downlink control information mechanism addresses inefficiencies in CSI measurement configurations by reducing signaling overhead, improving beam management efficiency and accuracy in wireless communications systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2024-11-18
- Publication Date
- 2026-05-21
Smart Images

Figure CN2024132585_21052026_PF_FP_ABST
Abstract
Description
TWO STAGE DOWNLINK CONTROL INFORMATION FOR CHANNEL STATE INFORMATION REPORTING CONFIGURATIONSFIELD OF TECHNOLOGY
[0001] The present disclosure relates to wireless communications, including two stage downlink control information for channel state information reporting configurations.BACKGROUND
[0002] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0003] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0004] A method for wireless communications by a user equipment (UE) is described. The method may include receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting, receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources, monitoring, based on the quasi co-location information, the set of channel state information resources, and transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0005] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to receive first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting, receive the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources, monitor, based on the quasi co-location information, the set of channel state information resources, and transmit, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0006] Another UE for wireless communications is described. The UE may include means for receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting, means for receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources, means for monitoring, based on the quasi co-location information, the set of channel state information resources, and means for transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0007] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting, receive the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources, monitor, based on the quasi co-location information, the set of channel state information resources, and transmit, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0008] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the first downlink control information may be received via a physical downlink control channel and the second downlink control information may be received via a physical downlink shared channel, the second downlink control information received after the first downlink control information.
[0009] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the second downlink control information further indicates a set of prediction target resources associated with the set of channel state information resources and the channel state information report includes one or more measurements associated with the set of prediction target resources.
[0010] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the presence of the second downlink control information may be indicated via a format of the first downlink control information, via a radio network temporary identifier included in the first downlink control information, or both.
[0011] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the first downlink control information includes a channel state information request field indicating an aperiodic channel state information trigger state, the aperiodic channel state information trigger state indicating one or more configuration information fields associated with the set of channel state information resources and at least one of the one or more configuration information fields indicates the presence of the second downlink control information.
[0012] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the second downlink control information indicates the set of channel state information resources and the second downlink control information further indicates respective quasi co-location information for a respective channel state information resource of the set of channel state information resources, a respective prediction target resource of a set of multiple prediction target resources for a respective channel state information resource of the set of channel state information resources, or both.
[0013] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the first downlink control information indicates the set of channel state information resources and a first set of entry identifiers associated with the set of channel state information resources and each entry identifier of the first set of entry identifiers corresponds to a respective entry identifier of a second set of entry identifiers associated with the quasi co-location information.
[0014] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving control signaling indicating a set of transmission configuration indication state identifiers associated with a cell, where the second downlink control information indicates respective quasi co-location information corresponding to a respective transmission configuration indication state identifier of the set of transmission configuration indication state identifiers.
[0015] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the first downlink control information indicates the set of channel state information resources and the channel state information report may be transmitted at a first time that may be based on a last symbol of the first downlink control information.
[0016] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the second downlink control information indicates the set of channel state information resources and the channel state information report may be transmitted at a first time that may be based on a last symbol of the second downlink control information and a quantity of offset symbols.
[0017] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 shows an example of a wireless communications system that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0019] FIG. 2 shows an example of a signaling diagram that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0020] FIG. 3 shows an example of a signaling diagram that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0021] FIG. 4 shows an example of a signaling diagram that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0022] FIG. 5 shows an example of a signaling diagram that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0023] FIG. 6 shows an example of a signaling diagram that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0024] FIG. 7 shows an example of a signaling diagram that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0025] FIGs. 8 and 9 show block diagrams of devices that support two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0026] FIG. 10 shows a block diagram of a communications manager that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0027] FIG. 11 shows a diagram of a system including a device that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.
[0028] FIG. 12 shows a flowchart illustrating methods that support two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0029] In some wireless communications systems, a user equipment (UE) may be configured to transmit a channel state information (CSI) report that includes measurements that the UE performs on one or more CSI reference signals (CSI-RSs) that are communicated via a set of CSI resources. In some examples, a configuration (e.g., from a network node) to measure the CSI-RSs may include quasi co-location (QCL) information, prediction target resource identifiers, or both, with the CSI-RSs to be measured. The QCL information may indicate transmission configuration indication (TCI) state information. In some cases, such QCL information or prediction target resource identifiers may be signaled to the UE via radio resource control (RRC) or medium access control-control element (MAC-CE) signaling. In some cases, however, the UE may be configured for a beam prediction procedure. For example, the UE may predict beam measurements for a set of prediction target resources based on measurements on a set of channel measurement resources. In some predictive beam management configurations, the UE to measure a relatively large quantity of measurement resources to obtain accurate predictions for the prediction target resources. However, signaling of the QCL information or prediction target resource identifiers for a relatively large quantity of measurement resources may increase signaling overhead for RRC or MAC-CE signaling, resulting in inefficiencies.
[0030] In accordance with examples described herein, a UE and a network node may support a 2-stage downlink control information (DCI) to indicate the QCL information, TCI state information, prediction target resource identifiers, or any combination thereof, for CSI measurement resources of a CSI report, to reduce signaling overhead. The QCL information, the TCI state information, the prediction target resource identifiers, or any combination thereof, may be carried by a second DCI message of a pair of two DCI messages. A first DCI message of the pair of DCI messages may be signaled via a physical downlink control channel (PDCCH) and the second DCI message of the pair of DCI messages may follow the first DCI in time and may be signaled via a physical downlink shared channel (PDSCH) that is scheduled by the first DCI message. An indication of the CSI resources and an indication of a request for the CSI report from the UE, as well as an uplink (UL) grant that schedules uplink resources to carry the requested CSI report, may be carried by either one of the first DCI or the second DCI.
[0031] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further described in the context of signaling diagrams. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to two stage downlink control information for channel state information reporting configurations.
[0032] FIG. 1 shows an example of a wireless communications system 100 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., network nodes 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0033] The network nodes 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network node 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network nodes 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (e.g., a radio frequency (RF) access link) . For example, a network node 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network node 105 may establish the communication link (s) 125. The coverage area 110 may be an example of a geographic area over which a network node 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0034] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network nodes 105) , as shown in FIG. 1.
[0035] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network node 105 (e.g., any network node described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network node 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network node 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network node 105, and the third node may be a network node 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network node 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network node 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network node 105 also discloses that a first node is configured to receive information from a second node.
[0036] In some examples, network nodes 105 may communicate with a core network 130, or with one another, or both. For example, network nodes 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network nodes 105 may communicate with one another via backhaul communication link (s) 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network nodes 105) or indirectly (e.g., via the core network 130) . In some examples, network nodes 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication link (s) 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) or one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0037] One or more of the network nodes 105 or network equipment described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network node 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network node (e.g., a network node 105 or a single RAN node, such as a base station 140) .
[0038] In some examples, a network node 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among multiple network nodes (e.g., network nodes 105) , such as an integrated access and backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network node 105 may include one or more of a central unit (CU) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an RIC 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, such as an SMO system 180, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network nodes 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network nodes 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more of the network nodes 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0039] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, or any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or multiple different RUs, such as an RU 170) . In some cases, a functional split between a CU 160 and a DU 165 or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to a DU 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network nodes (e.g., one or more of the network nodes 105) that are in communication via such communication links.
[0040] In some wireless communications systems (e.g., the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more of the network nodes 105 (e.g., network nodes 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network node 105 or base station 140 (such as a donor network node or a donor base station) . The one or more donor entities (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with an independent set of antennas for relay of communications with UEs 115 or may share the same antennas (e.g., of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0041] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support two stage downlink control information for channel state information reporting configurations as described herein. For example, some operations described as being performed by a UE 115 or a network node 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0042] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0043] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate as relays, as well as the network nodes 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0044] The UEs 115 and the network nodes 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network node 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network node 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network node 105, may refer to any portion of a network node 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network nodes, such as one or more of the network nodes 105) .
[0045] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0046] The time intervals for the network nodes 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0047] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0048] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0049] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to UEs 115 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0050] In some examples, a network node 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area, such as the coverage area 110. In some examples, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network node (e.g., a network node 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network nodes (e.g., the network nodes 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network nodes 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0051] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0052] In some examples, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network node 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network node 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network node 105 or may be otherwise unable to or not configured to receive transmissions from a network node 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network node 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network node 105.
[0053] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network nodes 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0054] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than one hundred kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0055] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network nodes 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0056] A network node 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network node 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network node 105 may be located at diverse geographic locations. A network node 105 may include an antenna array with a set of rows and columns of antenna ports that the network node 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0057] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network node 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0058] A network node 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network node 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network node 105 multiple times along different directions. For example, the network node 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network node 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network node 105.
[0059] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., a network node 105 or a UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as another network node 105 or UE 115) . In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network node 105 along different directions and may report to the network node 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0060] In some examples, transmissions by a device (e.g., by a network node 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network node 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network node 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network node 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0061] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a transmitting device (e.g., a network node 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0062] In accordance with examples described herein, a UE 115 and a network node 105 may support a 2-stage DCI to indicate the QCL or prediction target resource identifiers for CSI measurement resources of a CSI report, to reduce signaling overhead. The QCL information, the TCI state information, the prediction target resource identifiers, or any combination thereof, may be carried by a second DCI message of a pair of two DCI messages. A first DCI message of the pair of DCI messages may be signaled via a PDCCH and the second DCI message of the pair of DCI messages may follow the first DCI in time and may be signaled via a PDSCH that is scheduled by the first DCI message. An indication of the CSI resources and an indication of a request for the CSI report from the UE, as well as an UL grant that schedules uplink resources to carry the requested CSI report, may be carried by either one of the first DCI or the second DCI.
[0063] FIG. 2 shows an example of a signaling diagram 200 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The signaling diagram 200 may implement or may be implemented by aspects of the wireless communications system 100. For example, the signaling diagram 200 may include signaling communicated between a UE 115 and a network node 105, as described with reference to FIG. 1.
[0064] In accordance with examples described herein, a network node may signal to the UE a two-stage DCI for dynamic TCI-State or target resource identifier indication (e.g., set A beam ID) for aperiodic CSI-RSs (e.g., for configurations of CSI-RSs for CSI reports) . The UE may monitor two associated DCIs (e.g., the DCI 205 and the DCI 210) . Triggering of an aperiodic CSI report, triggering of a set of aperiodic CSI resources 215 (e.g., non-zero-power (NZP) CSI-RS resources) , scheduling of a PUSCH (e.g., one or more uplink resources of the PUSCH) carrying the aperiodic CSI report, dynamic indication of QCL information (e.g., TCI state information) , prediction target identifiers (e.g., Set-A beam IDs) for the respective aperiodic CSI-RS resources, or a combination thereof, may be jointly signaled by the two DCIs (e.g., the DCI 205 and the DCI 210) .
[0065] In an example, the UE monitors two associated DCIs, wherein triggering of an aperiodic CSI report, triggering of a number of aperiodic NZP-CSI-RS-Resource’s , scheduling of a PUSCH carrying the aperiodic CSI report, and dynamic indication of QCL information, TCI-state information, prediction target identifiers (e.g., Set A beam IDs) , or any combination thereof, for the respective aperiodic NZP-CSI-RS-Resources, may be jointly signaled by the two DCIs. The first DCI is earlier than the second DCI, which is a DL-grant DCI carried by PDCCH, and the second DCI may be carried by the PDSCH scheduled by the 1st DCI.
[0066] The first DCI 205 may be carried by a PDCCH. The first DCI 205 may be a downlink grant DCI scheduling a PDSCH transmission 230. The first DCI 205 may indicate a presence of a second DCI 210. The second DCI 210 may be carried by the PDSCH transmission 230 scheduled by the first DCI 205. In some examples, the second DCI 210 may indicate QCL information (e.g., TCI state information) and / or prediction target resource identifiers with respect to respective (e.g., corresponding) CSI resources 215 (e.g., CSI reference signals (CSI-RSs) ) being triggered. In some examples, a CSI request field triggering the CSI-RSs and a CSI report 220 may be carried by (e.g., indicated via) either the first DCI 205 or the second DCI 210. Additionally, or alternatively, an uplink grant scheduling the PUSCH (e.g., one or more uplink resources of the PUSCH) for carrying the CSI report 220 may be carried by (e.g., indicated via) either the first DCI 205 or the second DCI 210.
[0067] In an example, the first DCI is carried by PDCCH which is a DL-grant DCI scheduling a PDSCH. The first DCI indicates presence of the second DCI. The second DCI is carried by the PDSCH scheduled by the first DCI, which further indicates QCL information, TCI-state information, and / or Set A beam identifiers with respect to the respective AP CSI-RSs being triggered. A CSI request field triggering the AP CSI-RSs and the AP CSI report, as well as UL-grant scheduling the PUSCH carrying the AP CSI report, may be carried by either the first DCI or the second DCI.
[0068] The first DCI 205 and the second DCI 210 may jointly indicate a set of components that are used by the UE to monitor for the second DCI 210, configure the CSI report 220, or both. A component 1A may be included in the first DCI 205 and may implicitly or explicit indicate presence of a second DCI 210 associated with the first DCI 205, which is carried by the PDSCH transmission 230 scheduled by the first DL-grant DCI 205. A component 2A may be included in the second DCI 210 and may indicate TCI-state information, QCL information, identifiers of a set of prediction targets (e.g., Set A beam IDs) , or any combination thereof, for the respective CSI resources 215.
[0069] A component 1B (e.g., carried by the first DCI 205) or a component 2B (e.g., carried by the second DCI 210) may include a CSI request field. A CSI aperiodic trigger state triggered by the CSI request field may include at least one corresponding configuration information field whose resources for channel field (e.g., resourcesForChannel) is configured to be associated with the set of CSI resources 215. A component 1C (e.g., carried by the first DCI 205) or a component 2C (e.g., carried by the second DCI 210) may schedule a PUSCH carrying the aperiodic CSI report 220 associated with the configuration information field that is indicated / triggered by the component 1B or the component 2B. The first DCI 205 may include the component 1B or the second DCI may include the component 2B, but not both. The first DCI 205 may include the component 1C or the second DCI may include the component 2C, but not both.
[0070] In an examples, the Component 1A is the 1st DCI implicitly or explicit indicating presence of a 2nd DCI associated with the 1st DCI, which is carried by the PDSCH scheduled by the 1st DL-grant DCI.
[0071] In an examples, the Component 2A is the 2nd DCI indicating TCI-state information, QCL information, identifiers of a number of prediction targets (i.e., Set A beam IDs) , or any combination thereof, for the respective aperiodic NZP-CSI-RS-Resource’s .
[0072] In an example, the Component 1B or 2B is a CSI request field, wherein the CSI-AperiodicTriggerState triggered by the CSI request field, comprises at least one corresponding CSI-AssociatedReportConfigInfo whose resourcesForChannel is configured to be associated with the number of aperiodic NZP-CSI-RS-Resources. The CSI request field may carried by either the 1st DCI (as component 1B) or the 2nd DCI (as component 2B) .
[0073] In an examples, the component 1C or 2C may be fields that schedule a PUSCH carrying the aperiodic CSI report associated with the CSI-AssociatedReportConfigInfo considered by Component#1B / #2B. The fields that schedule the PUSCH are carried by either the 1st DCI (as component 1C) or the 2nd DCI (as component 2C) . In an example, component#1B (if Component#2B is not presented in the 2nd DCI) may include a CSI Request field triggering AP CSI-RSs and a AP CSI report. In an example, component#1C (if Component#2C is not presented in the 2nd DCI) : may schedule a PUSCH carrying the AP CSI report. In example, component#2B: if Component#1B is not presented in the 1st DCI, component#1B may be presented in the 2nd DCI. In an example, for cmponent#2C: If Component#1C is not presented in the 1st DCI, Component#1C may be presented in the 2nd DCI.
[0074] The first DCI 205 may implicitly or explicit indicate the presence of the second DCI 210 associated with the first DCI 205. The second DCI 210 may be carried by the PDSCH transmission 230 scheduled by the first DCI 205 (e.g., a downlink grant DCI) . The second DCI 210 may indicate QCL information (e.g., TCI state information) and / or identifiers of a quantity of prediction target resources (e.g., Set A beam IDs) , for respective aperiodic CSI-RS resources of the set of aperiodic CSI-RS resources (e.g., NZP-CSI-RS-Resources) .
[0075] A CSI request field may be carried by either the first DCI 205 or the second DCI 210. The CSI request field may trigger a CSI Aperiodic Trigger State, which may include at least one corresponding CSI Associated Report Configuration Information field (e.g., CSI-AssociatedReportConfigInfo) . The CSI Associated Report Configuration Information field may indicate resources for channel field (e.g., resourcesForChannel) which may be configured to be associated with the set of aperiodic CSI-RS resources (e.g., NZP-CSI-RS-Resources) . The CSI request field may trigger the CSI report 220 according to the CSI Aperiodic Trigger State. An uplink grant scheduling a PUSCH (e.g., one or more uplink resources of a PUSCH) for carrying the aperiodic CSI report 220 (e.g., associated with the CSI Associated Report Configuration Information field) may be carried by either the first DCI 205 or the second DCI 210.
[0076] The UE may determine a reference symbol for determining a duration 225 (e.g., a duration Z) and a slot / symbol offset of CSI resources 215 (e.g., a CSI resource 215-a, which may be a channel measurement resource (CMR) , a CSI resource 215-b, which may be an inference measurement resource (IMR) ) . The duration 225 and / or the slot / symbol offset of CSI resources 215 may be based on whether the CSI request field is carried in the first DCI 205 or the second DCI 210. If the CSI request field is included in the first DCI 205, the UE may treat the last symbol of the PDCCH carrying the first DCI 205 as the legacy PDCCH carrying an UL grant DCI including the CSI request, for determining the duration 225, which may be the duration 225-a.
[0077] If CSI request is included in the second DCI 210, the UE may treat the last symbol of the PDSCH transmission 230 carrying the second DCI 210 plus a predefined offset number of symbols, as the legacy PDCCH carrying an UL grant DCI comprising CSI request, for determining the duration 225, which may be the duration 225-b. The offset number of symbols may be predefined (e.g., as 0) or may be reported by the UE as a capability, for different subcarrier spacings. When determining slot / symbol offsets of the AP CSI-RSs being scheduled, the UE may also treat the last symbol of the PDSCH transmission 230 carrying the second DCI 210 plus the predefined offset number of symbols, as the legacy PDCCH carrying an UL grant DCI comprising CSI request. In some examples, processing of the PDSCH transmission 230 may have a longer latency relative to processing of a PDCCH.
[0078] In an example, the UE may determine a Reference Symbol for determining Z and slot / symbol offset of AP NZP-CSI-RSs (e.g., Proposal #3.1) . If CSI request is comprised by the 1st DCI (e.g., Component#1B is presented) , the UE may treat the last symbol of the PDCCH carrying the 1st DCI, as the legacy PDCCH carrying an UL-grant DCI comprising CSI request, for determining Z. When determining slot / symbol offsets of the AP CSI-RSs being scheduled, the UE may also treat the last symbol of the PDCCH carrying the 1st DCI, as the legacy PDCCH carrying an UL-grant DCI comprising CSI request. If CSI request is comprised by the 2nd DCI (e.g., Component#2B is presented) , UE may treat the last symbol of the PDSCH carrying the 2nd DCI plus a predefined offset number of symbols (e.g., defined by a wireless standard) , as the legacy PDCCH carrying an UL-grant DCI comprising CSI request, for determining Z.
[0079] In some examples, the offset quantity of symbols may be either predefined (e.g., as 0) or a UE reported capability, for different SCS. When determining slot / symbol offsets of the AP CSI-RSs being scheduled, UE may treat the last symbol of the PDSCH carrying the 2nd DCI plus the predefined offset quantity of symbols, as the legacy PDCCH carrying an UL-grant DCI comprising CSI request.
[0080] In an examples, the CSI request and UL-grant scheduling PUSCH may only be presented in the 2nd DCI (e.g., proposal #3.2) , such as may be specified, for example, in a wireless communications standard. When one of Component#2A, #2B, #2C is missing, the UE may unable to determine the CSI report with respect to the AP NZP-CSI-RSs, thus would be beneficial to capture in the same DCI payload (since Component#2A is carried by the 2nd DCI, the CSI request and UL-grant scheduling PUSCH may be included in the 2nd DCI) . In an example (e.g., proposal #3.3) , a predefined max or min symbol offset may be defined (e.g., in a wireless communication standard) between the last symbol of the PDCCH carrying the 1st DCI and the 1st symbol of the PDSCH carrying the 2nd DCI (e.g., to be 1, for latency reduction) .
[0081] In some examples, the CSI request and the UL grant scheduling PUSCH may only be presented in the second DCI 210 and not the first DCI 205. For example, because the UE may be unable to determine the CSI report with respect to the CSI resources 215 if the CSI request or the UL grant is missing, it may be beneficial to capture the = CSI request and the UL grant scheduling PUSCH in the same DCI payload.
[0082] In some examples, a max / min symbol offset between the last symbol of the PDCCH carrying the first DCI 205 and the first symbol of the PDSCH transmission 230 carrying the second DCI 210 may be predefined (e.g., to be 1, for latency reduction) .
[0083] In some examples (e.g. proposal #4.1) , decoding of the first DCI 205 may be successful, but the second DCI 210 may be missed (e.g., not received) by the UE. In such examples, if the CSI request and the UL grant scheduling PUSCH are indicated via the first DCI 205, a dedicated code-point of one or more components of the CSI report 220 may be used to feedback the second DCI 210 being missed, while remaining components may be reported with arbitrary (e.g., dummy) information. Otherwise, if the UL grant scheduling PUSCH is indicated via the first DCI 205 and the CSI request is indicated via the second DCI 210, the UE may be unaware of whether or which CSI aperiodic trigger state is being triggered, and accordingly there would exist uplink control information and / or physical uplink shared channel payload ambiguity issues. Thus, it may be predefined that such a scenario where the first DCI 205 carries the CSI report and the second DCI 210 carries the uplink grant scheduling PUSCH is prohibited.
[0084] Otherwise, if the CSI request is indicated via the first DCI 205 and the UL grant scheduling PUSCH is indicated via the second DCI 210, because the second DCI 210 is missed the UL grant may not be available to the UE, and the UE may be unable to identify the PUSCH. The UE may not report the CSI report and the network node may determine that decoding of the scheduled PUSCH has failed. Otherwise, if the CSI request and the UL grant are both indicated via the second DCI 210 (e.g., and not indicated via the first DCI 205) , since neither CSI request nor UL-grant is available to the UE, the UE may be unable to identify the PUSCH or the CSI report.
[0085] Based on a CSI aperiodic trigger state that includes a “special” configuration information field being triggered through a legacy UL-grant DCI (e.g., Proposal #4.2) , the RRC configured (e.g., either via the “special” configuration information field or via the CSI report configuration whose CSI report configuration ID is signaled by the “special” configuration information field) QCL information, TCI-State information, prediction target identifiers, or any combination thereof, regarding the respective CSI resources 215 associated with the “special” configuration information field are assumed for measuring such CSI resources 215.
[0086] In an example (e.g., Proposal #4.1) , if decoding of the 1st DCI was successful but the 2nd DCI is missed by the UE: if Component#1B C are presented: a dedicated code-point of one or more components of the CSI report may be used to feedback that the 2nd DCI is missed, while remaining components may be reported with arbitrary information. If Component#1C B are presented and decoding of the 1st DCI was successful: since the UE may not be sure about whether or which CSI-AperiodicTriggerState is being triggered, there would be UCI and / or PUSCH payload ambiguity issues. This situation (Component#1C &Component#2B are presented, despite of whether the 2nd DCI is missed or not) may be predefined to be prohibited (e.g., in a wireless communication standards) . If Component#1B C are presented but Component #1B is not presented: since an UL-grant is not available to the UE, the UE may be unable to identify the PUSCH. As such, the UE may not report the CSI report and the network entity would most likely be unable to decode the scheduled PUSCH. If Component#1B C are not presented (e.g., #2B C presented) and decoding of the 1st DCI was successful: since either CSI request nor UL-grant is available to the UE, the UE may be unable to identify the PUSCH or the CSI report.
[0087] In an example, when a CSI-AperiodicTriggerState comprising a “special” CSI-AssociatedReportConfigInfo is being triggered through a legacy UL-grant DCI (e.g., Proposal #4.2) , the RRC configured (either via the “special” CSI-AssociatedReportConfigInfo or via the CSI-ReportConfig whose CSI-ReportConfigId is signaled by the “special” CSI-AssociatedReportConfigInfo) QCL information, TCI-State information, prediction target identifiers, or any combination thereof, regarding the respective AP NZP-CSI-RS-Resources associated with the “special” CSI-AssociatedReportConfigInfo, may be assumed for measuring such AP NZP-CSI-RS-Resources.
[0088] FIG. 3 shows an example of a signaling diagram 300 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The signaling diagram 300 may implement or may be implemented by aspects of the wireless communications system 100 or the signaling diagram 200. For example, the signaling diagram 300 may include signaling communicated between a UE 115 and a network node 105, as described with reference to FIG. 1. The signaling diagram 300 may include a first DCI 305, which may be an example of a first DCI 205, as described with reference to FIG. 2.
[0089] According to examples described herein, a UE may receive, from a network node, a two stage DCI message for configuration (e.g., triggering) of an aperiodic CSI report. The two stage DCI message may provide methods to identify presence of a second DCI, based on a first DCI (e.g., Proposal #1) . The two stage DCI message may include a first DCI 305 (e.g., transmitted via PDCCH) and a second DCI (e.g., transmitted via PDSCH scheduled by the first DCI) . In some examples, the presence of the second DCI may be implicitly identified (e.g., Method #1) . That is, the UE may monitor for the second DCI based on receiving the first DCI 305 and may determine the presence of the second DCI implicitly from the first DCI 305. For example, a first DCI format or a first radio network temporary identifier (RNTI) field of the first DCI 305 may indicate that the first DCI 305 is part of a two stage DCI. Additionally, or alternatively, the first DCI format or the first RNTI may indicate the presence of the second DCI. The UE may determine that the first DCI 305 is part of the two stage DCI by decoding the first DCI and identifying that the first DCI 305 is of the first DCI format or includes the first RNTI. In such examples, the UE may expect (e.g., monitor for) the second DCI.
[0090] In some other examples, the first DCI 305 may include a CSI request field 310. The CSI request field 310 may trigger an applicable CSI aperiodic trigger state 315. An applicable CSI aperiodic trigger state 315 may be defined as a CSI aperiodic trigger state 315 that includes one or more configuration information fields 320 (e.g., CSI-AssociatedReportConfigInfo) that indicate the presence of the second DCI (e.g., are special configuration information fields 320) . For example, the configuration information field 320-a may indicate the presence of the second DCI via one or more fields, whereas the configuration information field 320-b and the configuration information field 320-c may not include any fields indicating the presence of the second DCI (e.g., the configuration information field 320-b and the configuration information field 320-c may not be special configuration information fields 320) . If at least one of the configuration information fields 320 indicated by the CSI aperiodic trigger state 315 indicates the presence of the second DCI via one or more fields, then the second DCI may be present and the UE may monitor for the second DCI accordingly.
[0091] In some examples, the configuration information field 320-a may include a flag 325 (e.g., SpecialFlag) to indicate the presence of the second DCI. For example, based on the configuration field 320-a including the flag 325 and based on the corresponding CSI aperiodic trigger state 315 of the configuration information field 320-a being triggered, the UE may monitor for the second DCI. In some other examples, the configuration information field 320-b may indicate a CSI report configuration identifier 330-a (e.g., CSI-ReportConfigId=3) . A CSI report configuration 335 corresponding to (e.g., linked to) the CSI report configuration identifier 330-a may include a flag 325 (e.g., SpecialFlag) to indicate the presence of the second DCI. For example, based on the configuration field 320-a that is linked to the configuration information field 320-a including the flag 325 and based on the corresponding CSI aperiodic trigger state 315 of the configuration information field 320-a being triggered, the UE may monitor for the second DCI.
[0092] Additionally, or alternatively, the presence of the second DCI may be explicitly signaled by the first DCI 305. For example, the first DCI 305 may include a dedicated field that indicates whether the second DCI is present or not. The dedicated field may be a single bit value to indicate the presence of the second DCI.
[0093] In some examples, each “special” configuration information field 320 or each CSI report configuration 335 whose CSI report configuration identifier 330 is indicated by one of the “special” configuration information fields 320, may further indicate that the second DCI indicates only QCL information and / or TCI-State information for the respective CSI-RS resources associated with the configuration information field 320, or indicate that the second DCI indicates only prediction target identifiers for the respective CSI-RS resources associated with the configuration information field 320, or indicates that the second DCI indicates both the QCL and / or TCI-State information and the prediction target identifiers.
[0094] In some examples, candidate TCI-State IDs, QCL information IDs, or both, indicated by the 2nd DCI may be TCI-State IDs that correspond to the RRC configured TCI-states for the corresponding cell. For example, the UE may receive control signaling (e.g., RRC signaling from a network node) indicating a set of TCI-State IDs associated with a cell. The second DCI may indicate respective quasi co-location information corresponding to a respective TCI-State ID of the set of TCI-State IDs. Additionally, or alternatively, the UE may be RRC configured with a list under the respective “special” configuration information fields 320, or under the CSI report configuration 335 whose CSI report configuration identifier 330 is indicated by one of the “special” configuration information fields 320. Then, the second DCI may indicate candidate entry-IDs defined in such a RRC configured list. Additionally, or alternatively, based on signaling, under the “special” configuration information fields 320, or under the CSI report configuration 335 whose CSI report configuration identifier 330 is indicated by one of the “special” configuration information fields 320, a second CSI report configuration identifier 330 whose associated CSI report configuration 335 schedules a CSI report carrying predicted channel characteristics on a quantity of prediction targets based on a quantity of measurement resources, such that the candidate QCL source RSs indicatable for each involved CSI-RS with respect to the “special” configuration information fields 320 are the measurement resources associated with the second CSI report configuration identifier 330.
[0095] In some examples, the second DCI may indicate prediction target resource identifiers. The “special” configuration information fields 320, or the CSI report configuration 335 whose CSI report configuration identifier 330 is indicated by one of the “special” configuration information fields 320, may further signal a second CSI report configuration identifier 330 whose associated CSI report configuration 335 schedules a CSI report carrying predicted channel characteristics on a quantity of prediction targets. The indicatable prediction target identifiers may be signaled by parameters under the CSI report configuration 335 or by parameters associated with the CSI report configuration 335.
[0096] Ins some examples, if a “special” configuration information field 320 is triggered but the second DCI is not presented (e.g., where presence of the 2nd DCI is explicitly indicated by the first DCI 305, where a CSI request and an uplink grant are carried by the first DCI 305) , TCI-State IDs corresponding to the respective aperiodic CSI-RS resources with respect to the configuration information field 320, follows their preconfigured ones signaled by the “special” configuration information field 320.
[0097] In an example, a presence of the 2nd DCI may be implicitly identified (e.g., Method #1) . In method #1A, a special DCI format and / or RNTI may be used. The DCI format and / or RNTI with respect to the 1st DCI may be special, such that as long as a UE decodes such a 1st DCI, the UE may expect to receive the 2nd DCI. In a method #1B, Component#1B may be presented in the 1st DCI and may trigger an applicable CSI-AperiodicTriggerState. Component#1B (i.e., CSI request field) may be presented in the 1st DCI. An applicable CSI-AperiodicTriggerState may be triggered by the CSI request field, wherein “applicable” may be defined as that the CSI-AperiodicTriggerState comprising one or more “special” CSI-AssociatedReportConfigInfo field, wherein such “special” CSI-AssociatedReportConfigInfo field (e.g., Method#1B. 1) or the CSI-ReportConfig associated with the CSI-ReportConfigId indicated by the “special” CSI-AssociatedReportConfigInfo (e.g., Method#1B. 2) , further include sub-IEs indicating that when the corresponding CSI-AssociatedReportConfigInfo’s CSI-AperiodicTriggerState is being triggered, a UE expects to receive the 2nd DCI.
[0098] In another example, presence of the 2nd DCI is explicitly signaled by the 1st DCI (e.g., Method #2) . The 1st DCI may include a dedicated field, indicating whether the 2nd DCI is presented or not.
[0099] In an example, a network node may determine whether and how to signal QCL information, TCI-State Information, Set A Beam IDs, or any combination thereof (e.g., Proposal #2.1) . In an example, each “special” CSI-AssociatedReportConfigInfo or each CSI-ReportConfig whose CSI-ReportConfigId may be indicated by one of the “special” CSI-AssociatedReportConfigInfo’s , and may further indicate that the 2nd DCI may indicate only QCL information, TCI-State information, or both, for the respective NZP-CSI-RS-Resources associated with the CSI-AssociatedReportConfigInfo, or indicate only prediction target identifiers for the respective NZP-CSI-RS-Resources associated with the CSI-AssociatedReportConfigInfo, or both (e.g., Proposal #2.1.1) .
[0100] In some examples (e.g., (e.g., Proposal #2.1.2) , candidate TCI-State IDs, QCL information IDs, or both, indicatable by the 2nd DCI may be: TCI-State IDs corresponding to the RRC configured TCI-states for the corresponding cell, or, for further overhead reduction purposes: RRC configured with a list under the respective “special” CSI-AssociatedReportConfigInfo fields, or under the CSI-ReportConfig whose CSI-ReportConfigId is indicated by one of the “special” CSI-AssociatedReportConfigInfo fields. Then the 2nd DCI may indicate candidate entry-IDs defined in such a RRC configured list. For further overhead reduction purposes, based on signaling, under the “special” CSI-AssociatedReportConfigInfo or the CSI-ReportConfig whose CSI-ReportConfigId is linked with the “special” CSI-AssociatedReportConfigInfo, another CSI-ReportConfigId whose associated CSI-ReportConfig schedules a CSI report carrying predicted channel characteristics on a number of prediction targets based on a number of measurement resources, such that the candidate QCL source RSs indicatable for each involved AP CSI-RS with respect to the “special” CSI-AssociatedReportConfigInfo are the measurement resources associated with the another CSI-ReportConfigId.
[0101] When prediction target identifiers are indicated by the 2nd DCI: the “special” CSI-AssociatedReportConfigInfo or the CSI-ReportConfig whose CSI-ReportConfigId is linked with the “special” CSI-AssociatedReportConfigInfo, may further signal another CSI-ReportConfigId whose associated CSI-ReportConfig schedules a CSI report carrying predicted channel characteristics on a number of prediction targets, wherein indicatable prediction target identifiers are signaled by IEs under the CSI-ReportConfig or by IEs associated with the CSI-ReportConfig (e.g., Proposal #2.1.3) .
[0102] In some examples, if a “special” CSI-AssociatedReportConfigInfo is triggered but the 2nd DCI is NOT presented (e.g., when presence of the 2nd DCI is explicitly indicated by the 1st DCI, where CSI request and UL-grant are carried by the 1st DCI) : TCI-State IDs corresponding to the respective aperiodic NZP-CSI-RS-Resource’s with respect to the CSI-AssociatedReportConfigInfo, may follow their preconfigured TCI-States signaled by the “special” CSI-AssociatedReportConfigInfo ( (e.g., Proposal #2.1.4) .
[0103] FIG. 4 shows an example of a signaling diagram 400 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The signaling diagram 400 may implement or may be implemented by aspects of the wireless communications system 100 or the signaling diagram 200. For example, the signaling diagram 400 may include signaling communicated between a UE 115 and a network node 105, as described with reference to FIG. 1. The signaling diagram 400 may include a first DCI 405 and a second DCI 435, which may be examples of the first DCI 205 and the second DCI 210, respectively, as described with reference to FIG. 2.
[0104] According to examples described herein, a UE may receive, from a network node, a two stage DCI message for configuration (e.g., triggering) of an aperiodic CSI report. The two stage DCI message may include a first DCI 405 (e.g., transmitted via PDCCH) and a second DCI 435 (e.g., transmitted via PDSCH scheduled by the first DCI) . In some examples, each aperiodic CSI-RS resource 425 of a set of aperiodic CSI-RS resources 425 being triggered by a CSI request field of the first DCI 405 may also be indicated by the second DCI with QCL information (e.g., TCI state information) and / or prediction target resource identifiers. In some cases, all aperiodic CSI-RS resources 425 being triggered by the same CSI request field 410, are either all being signaled with QCL information and / or TCI-state information, or being signaled with prediction target identifiers, or both.
[0105] In such cases, the UE may not identify which of the configuration information fields 420 specially indicate the presence of the second DCI, because any time aperiodic CSI-RS resources 425 are triggered, the UE may monitor for (e.g., and expect) the second DCI. Such configuration information fields 420 may be conventional configuration information fields 420 and may not include signaling enhancements. Additionally, or alternatively, some additional signaling (e.g., configuring candidate QCL identifiers, TCI-State identifiers, or both, to be signaled, configuring linkage with another CSI report configuration with respect to sending predicted channel characteristics for the candidate prediction target identifiers) may be carried by (e.g., indicated via) the configuration information fields 420.
[0106] In some examples, the first DCI 405 may include a CSI request field 410. The CSI request field 410 may trigger a CSI aperiodic trigger state 415. The CSI aperiodic trigger state 415 include a configuration information field 420-a, a configuration information field 420-b, a configuration information field 420-c, and configuration information field 420-d. The configuration information field 420-a may trigger an aperiodic CSI-RS resource 425-a (e.g., trigger transmission of one or more CSI-RSs via the CSI-RS resource 425-a from a network node) and the configuration field 420-c may trigger an aperiodic CSI resource 425-b. The configuration information field 420-b and the configuration information field 420-d may not trigger aperiodic CSI-RSs. Based on the configuration information field 420-a triggering the CSI-RS resource 425-a, the second DCI 435 may include an indication of the CSI-RS resource 425-a and first QCL information (e.g., TCI-State information) or a first set of prediction target resource identifiers corresponding to (e.g., for) the CSI-RS resource 425-a. Similarly, based on the configuration field 420-c triggering the CSI-RS resource 325-b, the second DCI 435 may include an indication of the CSI-RS resource 425-b and second QCL information (e.g., TCI-State information) or a second set of prediction target resource identifiers corresponding to (e.g., for) the CSI-RS resource 425-b.
[0107] In an example, the UE may expect triggering of up to all aperiodic CSI-RSs, as indicated by the 2nd DCI with QCL information, TCI-state information, prediction target identifiers, or any combination thereof (e.g., proposal #1.1) . A wireless communication, or the network may preconfigured (e.g., via communicating one or more control messages) that: when the 2nd DCI is identified to be presented, all aperiodic CSI-RSs being triggered by the CSI request field, may be signaled by the 2nd DCI with QCL information, TCI-state information, prediction target identifiers, or any combination thereof. This can be optionally further based on, that all aperiodic CSI-RSs being triggered by the same CSI request field, are either all being signaled with QCL information, TCI-state information, or both, or being signaled with prediction target identifiers, or both. In an example, (via Proposal#1-Method#1A or Proposal#1-Method#2) , according to Proposal#1.1, whether each CSI-AssociatedReportConfigInfo may be identified as “special” as in Proposal#1-Method#1B may be optional. Alternatively, or additionally, some additional signaling (e.g., configuring candidate QCL identifies, TCI-state Identifiers, or both, to be signaled, or configuring linkage with another CSI-ReportConfig with respect to sending predicted channel characteristics for the candidate prediction target identifiers) , may be carried by a CSI-AssociatedReportConfigInfo field in control signaling.
[0108] FIG. 5 shows an example of a signaling diagram 500 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The signaling diagram 500 may implement or may be implemented by aspects of the wireless communications system 100 or the signaling diagram 200. For example, the signaling diagram 500 may include signaling communicated between a UE 115 and a network node 105, as described with reference to FIG. 1. The signaling diagram 500 may include a first DCI 505 and a second DCI 535, which may be examples of the first DCI 205 and the second DCI 210, respectively, as described with reference to FIG. 2.
[0109] According to examples described herein, a UE may receive, from a network node, a two stage DCI message for configuration (e.g., triggering) of an aperiodic CSI report. The two stage DCI message may include a first DCI 505 (e.g., transmitted via PDCCH) and a second DCI 535 (e.g., transmitted via PDSCH scheduled by the first DCI) . In some examples, the first DCI 505 may include a CSI request field 510. The CSI request field 510 may trigger a CSI aperiodic trigger state 515. The CSI aperiodic trigger state 515 include a configuration information field list 555 (e.g., associatedReportConfigInfoList) that includes configuration information field 520-a, a configuration information field 520-b, a configuration information field 520-c, a configuration information field 520-d, and a configuration information field 520-e. The second DCI 535 may carry (e.g., indicate) a list of components (e.g., entries) of QCL information, TCI-state information, prediction target identifiers, or any combination thereof for a respective aperiodic CSI-RS resource set 525 (e.g., a CSI-RS resource set 525-a, a CSI-RS resource set 525-b) for each configuration information field 520 that is identified by the UE as a special configuration information field, or identified by the UE as indicating the presence of the second DCI, as described with reference to FIG. 3.
[0110] Mapping from the components of such QCL information, TCI-state information, prediction target identifiers, or any combination thereof, to CSI-RS resources of the CSI-RS resource sets 525, may be firstly based on ascending / descending orders of the entry-identifiers (entry-IDs) in the configuration information field list 555 of the triggered CSI aperiodic trigger state 515 with respect to the respectively “special” configuration information fields 520, and / or secondly based on ascending / descending orders of the entry-IDs in the CSI-RS resource sets 525 associated with the involved CSI-RS resource sets 525 in the CSI resource configuration associated with each “special” configuration information field 520, and / or thirdly based on ascending / descending orders of the entry-IDs of the respective CSI-RS resources included in each involved CSI-RS resource set 525.
[0111] The CSI-RS resource set 525-a may be indicated by the configuration information field 520-a, which may have a first entry-ID (e.g., Entry#1) of a first set of entry-IDs corresponding to configuration information fields 520. The CSI-RS resource set 525-a may include a CSI-RS resource identifier 540-a in a first entry-ID (e.g., Entry#1) and a CSI-RS resource identifier 540-b in a second entry-ID (e.g., Entry#N) of a second set of entry-IDs corresponding to the CSI-RS resource set 525-a. The CSI-RS resource set 525-b may be indicated by the configuration information field 520-d, which may have a second entry-ID (e.g., Entry#4) of the first set of entry-IDs corresponding to the configuration information fields 520. The CSI-RS resource set 525-b may include a CSI-RS resource identifier 540-c in a first entry-ID (e.g., Entry#1) and a CSI-RS resource identifier 540-b in a second entry-ID (e.g., Entry#M) of a third set of entry-IDs corresponding to the CSI-RS resource set 525-b.
[0112] The second DCI 535 may indicate one or more entries 545 that each correspond to a respective CSI-RS resource identifier 540 and indicate QCL information, TCI state information, prediction target resource identifiers, or any combination thereof, for the respective CSI-RS resource identifier 540. For example, the second DCI 535 may indicate an entry 545-a that includes QCL information and / or target resource identifiers for the CSI-RS resource identifier 540-a, an entry 545-b that includes QCL information, TCI state information, target resource identifiers, or any combination thereof, for the CSI-RS resource identifier 540-b, an entry 545-d that includes QCL information or target resource identifiers for the CSI-RS resource identifier 540-d, and so on. Mappings between the entries 545 included in the second DCI 535 and the CSI-RS resource identifiers 540 indicated by the configuration information fields 520 may be according to one or more mapping rules 550, which may be indicated by the network node or may be preconfigured at the UE.
[0113] In some examples, a payload size of the second DCI 535 may be fixed. For example, the payload size of the second DCI 535 may be fixed based on a total quantity of CSI-RS resource identifiers 540 included in the “special” configuration information fields 520 included in the CSI aperiodic trigger state 515 that is triggered by the first DCI 505.
[0114] In some examples, the CSI request field 510 may be included in the second DCI 535. A payload of the second DCI 535 may be separated into at least two parts, where a first part of the payload includes a fixed payload and includes at least the CSI request field 510. A second part of the payload may have a size that is based on the total quantity of CSI-RS resource identifiers 540 included in the “special” configuration information fields 520 included in the CSI aperiodic trigger state 515 that is triggered by the first part of the payload.
[0115] In an example, methods may be used to identify payload details of the 2nd DCI (e.g., proposal #2) . First, the concept &methods of “special” CSI-AssociatedReportConfigInfo in Proposal#1-Method#1B may reused. For example, the same “special” flag as in Proposal#1-Method#1B may be used, or a separate “special” flag may be used.
[0116] A first case (e.g., Case #1) is when the CSI request is included in the 1st DCI (e.g., Component#1B is presented) . The 2nd DCI may include a list of components of QCL information, TCI-state information, prediction target IDs, or any combination thereof (e.g., Component#2A) , for the respective aperiodic NZP-CSI-RS-Resource’s for all “special” CSI-AssociatedReportConfigInfo’s comprised by the CSI-AperiodicTrggerState indicated by the CSI request field in the 1st DCI. Mapping from the components of such QCL information, TCI-state information, prediction target identifiers, or any combination thereof, to the NZP-CSI-RS-Resources, may be based on ascending / descending orders of the entry-IDs in the associatedReportConfigInfoList of the triggered CSI-AperiodicTriggerState with respect to the respectively “special” CSI-AssociatedReportConfigInfo fields, based on ascending / descending orders of the entry-IDs in the nzp-CSI-RS-ResourceSetList associated with the involved NZP-CSI-RS-ResourceSet’s in the CSI-ResourceConfig associated with each “special” CSI-AssociatedReportConfigInfo, based on ascending / descending orders of the entry-IDs of the respective NZP-CSI-RS-Resource’s comprised by each involved NZP-CSI-RS-ResourceSet, or any combination thereof. In some examples, a payload size of the 2nd DCI may be fixed, which may depend on at least on the total number of NZP-CSI-RS-Resources involved in the “special” CSI-AssociatedReportConfigInfo’s comprised by the CSI-AperiodicTriggerState triggered by the 1st DCI.
[0117] A second case (e.g., Case #2) may occur when the CSI request is included the 2nd DCI (e.g., Component#2B is presented) . The 2nd DCI’s payload may be be separated into at least 2 parts, where the 1st part comprises a fixed payload and includes the CSI request field. The 2nd part may comprise the payload considered by the first case (e.g., Case #1) , and a size of the payload may depend on the total number of NZP-CSI-RS-Resources involved in the “special” CSI-AssociatedReportConfigInfo field comprised by the CSI-AperiodicTriggerState triggered in the 1st part.
[0118] FIG. 6 shows an example of a signaling diagram 600 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The signaling diagram 600 may implement or may be implemented by aspects of the wireless communications system 100 or the signaling diagram 200. For example, the signaling diagram 600 may include signaling communicated between a UE 115 and a network node 105, as described with reference to FIG. 1. The signaling diagram 600 may include a framework for aperiodic CSI reports, such as the CSI report 220 described with reference to FIG. 2.
[0119] According to examples described herein, a UE may receive, from a network node, a two stage DCI message for configuration (e.g., triggering) of an aperiodic CSI report. The two stage DCI message may include a first DCI (e.g., transmitted via PDCCH) and a second DCI (e.g., transmitted via PDSCH scheduled by the first DCI) . In some examples, one or more fields of the first DCI or the second DCI, or both, of the two stage DCI message as described herein may be based on or may be used to indicate one or more fields of the framework for aperiodic CSI reports illustrated by the signaling diagram 600. In some examples, the QCL information, TCI state information, or target beam identifiers indicated by the second DCI of the two stage DCI may be based on one or more fields of the signaling diagram 600.
[0120] FIG. 7 shows an example of a signaling diagram 700 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The signaling diagram 700 may implement or may be implemented by aspects of the wireless communications system 100 or the signaling diagram 200. For example, the signaling diagram 700 may include signaling communicated between a UE 115 and a network node 105, as described with reference to FIG. 1. The signaling diagram 700 may include a framework for aperiodic CSI reports, such as the CSI report 220 described with reference to FIG. 2.
[0121] According to examples described herein, a UE may receive, from a network node, a two stage DCI message for configuration (e.g., triggering) of an aperiodic CSI report. The two stage DCI message may include a first DCI (e.g., transmitted via PDCCH) and a second DCI (e.g., transmitted via PDSCH scheduled by the first DCI) . In some examples, one or more fields of the first DCI or the second DCI, or both, of the two stage DCI message as described herein may be based on or may be used to indicate any of the fields of the framework for aperiodic CSI reports illustrated by the signaling diagram 700. In some examples, the QCL information, TCI state information, target beam identifiers, or any combination thereof, indicated by the second DCI of the two stage DCI may be based one or more fields of the signaling diagram 700 or may be indicated in accordance with one or more fields of the signaling diagram 700.
[0122] FIG. 8 shows a block diagram 800 of a device 805 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805, or one or more components of the device 805 (e.g., the receiver 810, the transmitter 815, the communications manager 820) , may include one or more processors, one or more memories coupled with the one or more processors, and instructions stored in the one or more memories that are executable by the one or more processors to enable the one or more processors to perform the channel state information reporting features discussed herein. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0123] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to two stage downlink control information for channel state information reporting configurations) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0124] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to two stage downlink control information for channel state information reporting configurations) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0125] The communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be examples of means for performing various aspects of two stage downlink control information for channel state information reporting configurations as described herein. For example, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0126] In some examples, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0127] Additionally, or alternatively, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0128] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0129] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting. The communications manager 820 is capable of, configured to, or operable to support a means for receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources. The communications manager 820 is capable of, configured to, or operable to support a means for monitoring, based on the quasi co-location information, the set of channel state information resources. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0130] By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 (e.g., at least one processor controlling or otherwise coupled with the receiver 810, the transmitter 815, the communications manager 820, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communication resources.
[0131] FIG. 9 shows a block diagram 900 of a device 905 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a device 805 or a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one of more components of the device 905 (e.g., the receiver 910, the transmitter 915, the communications manager 920) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0132] The receiver 910 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to two stage downlink control information for channel state information reporting configurations) . Information may be passed on to other components of the device 905. The receiver 910 may utilize a single antenna or a set of multiple antennas.
[0133] The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to two stage downlink control information for channel state information reporting configurations) . In some examples, the transmitter 915 may be co-located with a receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.
[0134] The device 905, or various components thereof, may be an example of means for performing various aspects of two stage downlink control information for channel state information reporting configurations as described herein. For example, the communications manager 920 may include a control component 925, a monitoring component 930, a CSI report component 935, or any combination thereof. The communications manager 920 may be an example of aspects of a communications manager 820 as described herein. In some examples, the communications manager 920, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
[0135] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The control component 925 is capable of, configured to, or operable to support a means for receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting. The control component 925 is capable of, configured to, or operable to support a means for receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources. The monitoring component 930 is capable of, configured to, or operable to support a means for monitoring, based on the quasi co-location information, the set of channel state information resources. The CSI report component 935 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0136] FIG. 10 shows a block diagram 1000 of a communications manager 1020 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The communications manager 1020 may be an example of aspects of a communications manager 820, a communications manager 920, or both, as described herein. The communications manager 1020, or various components thereof, may be an example of means for performing various aspects of two stage downlink control information for channel state information reporting configurations as described herein. For example, the communications manager 1020 may include a control component 1025, a monitoring component 1030, a CSI report component 1035, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0137] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The control component 1025 is capable of, configured to, or operable to support a means for receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting. In some examples, the control component 1025 is capable of, configured to, or operable to support a means for receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources. The monitoring component 1030 is capable of, configured to, or operable to support a means for monitoring, based on the quasi co-location information, the set of channel state information resources. The CSI report component 1035 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0138] In some examples, the first downlink control information is received via a physical downlink control channel. In some examples, the second downlink control information is received via a physical downlink shared channel, the second downlink control information received after the first downlink control information.
[0139] In some examples, the second downlink control information further indicates a set of prediction target resources associated with the set of channel state information resources. In some examples, the channel state information report includes one or more measurements associated with the set of prediction target resources.
[0140] In some examples, the presence of the second downlink control information is indicated via a format of the first downlink control information, via a radio network temporary identifier included in the first downlink control information, or both.
[0141] In some examples, the first downlink control information includes a channel state information request field indicating an aperiodic channel state information trigger state, the aperiodic channel state information trigger state indicating one or more configuration information fields associated with the set of channel state information resources. In some examples, at least one of the one or more configuration information fields indicates the presence of the second downlink control information.
[0142] In some examples, the second downlink control information indicates the set of channel state information resources. In some examples, the second downlink control information further indicates respective quasi co-location information for a respective channel state information resource of the set of channel state information resources, a respective prediction target resource of a set of multiple prediction target resources for a respective channel state information resource of the set of channel state information resources, or both.
[0143] In some examples, the first downlink control information indicates the set of channel state information resources and a first set of entry identifiers associated with the set of channel state information resources. In some examples, each entry identifier of the first set of entry identifiers corresponds to a respective entry identifier of a second set of entry identifiers associated with the quasi co-location information.
[0144] In some examples, the control component 1025 is capable of, configured to, or operable to support a means for receiving control signaling indicating a set of transmission configuration indication state identifiers associated with a cell, where the second downlink control information indicates respective quasi co-location information corresponding to a respective transmission configuration indication state identifier of the set of transmission configuration indication state identifiers.
[0145] In some examples, the first downlink control information indicates the set of channel state information resources. In some examples, the channel state information report is transmitted at a first time that is based on a last symbol of the first downlink control information.
[0146] In some examples, the second downlink control information indicates the set of channel state information resources. In some examples, the channel state information report is transmitted at a first time that is based on a last symbol of the second downlink control information and a quantity of offset symbols.
[0147] In some cases, the control component 925, the monitoring component 930, and the CSI report component 935 may each be or be at least a part of a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor, or a receiver processor) . The processor may be coupled with memory and execute instructions stored in the memory that enable the processor to perform or facilitate the features of the control component 925, the monitoring component 930, and the CSI report component 935 discussed herein. A transceiver processor may be collocated with and / or communicate with (e.g., direct the operations of) a transceiver of the device. A radio processor may be collocated with and / or communicate with (e.g., direct the operations of) a radio (e.g., an NR radio, an LTE radio, a Wi-Fi radio) of the device. A transmitter processor may be collocated with and / or communicate with (e.g., direct the operations of) a transmitter of the device. A receiver processor may be collocated with and / or communicate with (e.g., direct the operations of) a receiver of the device.
[0148] FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of or include components of a device 805, a device 905, or a UE 115 as described herein. The device 1105 may communicate (e.g., wirelessly) with one or more other devices (e.g., network nodes 105, UEs 115, or a combination thereof) . The device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1120, an input / output (I / O) controller, such as an I / O controller 1110, a transceiver 1115, one or more antennas 1125, at least one memory 1130, code 1135, and at least one processor 1140. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1145) .
[0149] The I / O controller 1110 may manage input and output signals for the device 1105. The I / O controller 1110 may also manage peripherals not integrated into the device 1105. In some cases, the I / O controller 1110 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1110 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1110 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1110 may be implemented as part of one or more processors, such as the at least one processor 1140. In some cases, a user may interact with the device 1105 via the I / O controller 1110 or via hardware components controlled by the I / O controller 1110.
[0150] In some cases, the device 1105 may include a single antenna. However, in some other cases, the device 1105 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1115 may communicate bi-directionally via the one or more antennas 1125 using wired or wireless links as described herein. For example, the transceiver 1115 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1115 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1125 for transmission, and to demodulate packets received from the one or more antennas 1125. The transceiver 1115, or the transceiver 1115 and one or more antennas 1125, may be an example of a transmitter 815, a transmitter 915, a receiver 810, a receiver 910, or any combination thereof or component thereof, as described herein.
[0151] The at least one memory 1130 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1130 may store computer-readable, computer-executable, or processor-executable code, such as the code 1135. The code 1135 may include instructions that, when executed by the at least one processor 1140, cause the device 1105 to perform various functions described herein. The code 1135 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1135 may not be directly executable by the at least one processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1130 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0152] The at least one processor 1140 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 1140 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1140. The at least one processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting two stage downlink control information for channel state information reporting configurations) . For example, the device 1105 or a component of the device 1105 may include at least one processor 1140 and at least one memory 1130 coupled with or to the at least one processor 1140, the at least one processor 1140 and the at least one memory 1130 configured to perform various functions described herein.
[0153] In some examples, the at least one processor 1140 may include multiple processors and the at least one memory 1130 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 1140 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1140) and memory circuitry (which may include the at least one memory 1130) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1140 or a processing system including the at least one processor 1140 may be configured to, configurable to, or operable to cause the device 1105 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code 1135 (e.g., processor-executable code) stored in the at least one memory 1130 or otherwise, to perform one or more of the functions described herein.
[0154] The communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting. The communications manager 1120 is capable of, configured to, or operable to support a means for receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources. The communications manager 1120 is capable of, configured to, or operable to support a means for monitoring, based on the quasi co-location information, the set of channel state information resources. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report.
[0155] By including or configuring the communications manager 1120 in accordance with examples as described herein, the device 1105 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, and improved utilization of processing capability.
[0156] In some examples, the communications manager 1120 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1115, the one or more antennas 1125, or any combination thereof. Although the communications manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1120 may be supported by or performed by the at least one processor 1140, the at least one memory 1130, the code 1135, or any combination thereof. For example, the code 1135 may include instructions executable by the at least one processor 1140 to cause the device 1105 to perform various aspects of two stage downlink control information for channel state information reporting configurations as described herein, or the at least one processor 1140 and the at least one memory 1130 may be otherwise configured to, individually or collectively, perform or support such operations.
[0157] In some cases, the control component 925, the monitoring component 930, and the CSI report component 935 may each be or be at least a part of a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor, or a receiver processor) . The processor may be coupled with memory and execute instructions stored in the memory that enable the processor to perform or facilitate the features of the control component 925, the monitoring component 930, and the CSI report component 935 discussed herein.
[0158] FIG. 12 shows a flowchart illustrating a method 1200 that supports two stage downlink control information for channel state information reporting configurations in accordance with one or more aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0159] At 1205, the method may include receiving first downlink control information, where the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting. The operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by a control component 1025 as described with reference to FIG. 10.
[0160] At 1210, the method may include receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, where one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based on the set of channel state information resources. The operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by a control component 1025 as described with reference to FIG. 10.
[0161] At 1215, the method may include monitoring, based on the quasi co-location information, the set of channel state information resources. The operations of 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by a monitoring component 1030 as described with reference to FIG. 10.
[0162] At 1220, the method may include transmitting, via the one or more uplink resources and based on the set of channel state information resources being monitored, the channel state information report. The operations of 1220 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1220 may be performed by a CSI report component 1035 as described with reference to FIG. 10.
[0163] The following provides an overview of aspects of the present disclosure:
[0164] Aspect 1: A method for wireless communications by a UE, comprising: receiving first downlink control information, wherein the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting; receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, wherein one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based at least in part on the set of channel state information resources; monitoring, based at least in part on the quasi co-location information, the set of channel state information resources; and transmitting, via the one or more uplink resources and based at least in part on the set of channel state information resources being monitored, the channel state information report.
[0165] Aspect 2: The method of aspect 1, wherein the first downlink control information is received via a physical downlink control channel, and the second downlink control information is received via a physical downlink shared channel, the second downlink control information received after the first downlink control information.
[0166] Aspect 3: The method of any of aspects 1 through 2, wherein the second downlink control information further indicates a set of prediction target resources associated with the set of channel state information resources, and the channel state information report comprises one or more measurements associated with the set of prediction target resources.
[0167] Aspect 4: The method of any of aspects 1 through 3, wherein the presence of the second downlink control information is indicated via a format of the first downlink control information, via a radio network temporary identifier included in the first downlink control information, or both.
[0168] Aspect 5: The method of any of aspects 1 through 4, wherein the first downlink control information comprises a channel state information request field indicating an aperiodic channel state information trigger state, the aperiodic channel state information trigger state indicating one or more configuration information fields associated with the set of channel state information resources, and at least one of the one or more configuration information fields indicates the presence of the second downlink control information.
[0169] Aspect 6: The method of any of aspects 1 through 5, wherein the second downlink control information indicates the set of channel state information resources, and the second downlink control information further indicates respective quasi co-location information for a respective channel state information resource of the set of channel state information resources, a respective prediction target resource of a plurality of prediction target resources for a respective channel state information resource of the set of channel state information resources, or both.
[0170] Aspect 7: The method of any of aspects 1 through 6, wherein the first downlink control information indicates the set of channel state information resources and a first set of entry identifiers associated with the set of channel state information resources, and each entry identifier of the first set of entry identifiers corresponds to a respective entry identifier of a second set of entry identifiers associated with the quasi co-location information.
[0171] Aspect 8: The method of any of aspects 1 through 7, further comprising: receiving control signaling indicating a set of transmission configuration indication state identifiers associated with a cell, wherein the second downlink control information indicates respective quasi co-location information corresponding to a respective transmission configuration indication state identifier of the set of transmission configuration indication state identifiers.
[0172] Aspect 9: The method of any of aspects 1 through 8, wherein the first downlink control information indicates the set of channel state information resources, and the channel state information report is transmitted at a first time that is based at least in part on a last symbol of the first downlink control information.
[0173] Aspect 10: The method of any of aspects 1 through 9, wherein the second downlink control information indicates the set of channel state information resources, and the channel state information report is transmitted at a first time that is based at least in part on a last symbol of the second downlink control information and a quantity of offset symbols.
[0174] Aspect 11: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 10.
[0175] Aspect 12: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 10.
[0176] Aspect 13: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 10.
[0177] It should be noted that the methods described herein describe possible implementations. The operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0178] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0179] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0180] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a graphics processing unit (GPU) , a neural processing unit (NPU) , an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0181] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0182] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0183] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0184] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “acomponent” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “acomponent” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0185] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database, or another data structure) , ascertaining, and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) , and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0186] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label or other subsequent reference label.
[0187] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some figures, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0188] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories, wherein the one or more processors are individually or collectively configured to cause the UE to:receive first downlink control information, wherein the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting;receive the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, wherein one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based at least in part on the set of channel state information resources;monitor, based at least in part on the quasi co-location information, the set of channel state information resources; andtransmit, via the one or more uplink resources and based at least in part on the set of channel state information resources being monitored, the channel state information report.2.The UE of claim 1, wherein the first downlink control information is received via a physical downlink control channel, and wherein the second downlink control information is received via a physical downlink shared channel, the second downlink control information received after the first downlink control information.3.The UE of claim 1, wherein the second downlink control information further indicates a set of prediction target resources associated with the set of channel state information resources, and wherein the channel state information report comprises one or more measurements associated with the set of prediction target resources.4.The UE of claim 1, wherein the presence of the second downlink control information is indicated via a format of the first downlink control information, via a radio network temporary identifier included in the first downlink control information, or both.5.The UE of claim 1, wherein the first downlink control information comprises a channel state information request field indicating an aperiodic channel state information trigger state, the aperiodic channel state information trigger state indicating one or more configuration information fields associated with the set of channel state information resources, and wherein at least one of the one or more configuration information fields indicates the presence of the second downlink control information.6.The UE of claim 1, wherein the second downlink control information indicates the set of channel state information resources, and wherein the second downlink control information further indicates respective quasi co-location information for a respective channel state information resource of the set of channel state information resources, a respective prediction target resource of a plurality of prediction target resources for a respective channel state information resource of the set of channel state information resources, or both.7.The UE of claim 1, wherein the first downlink control information indicates the set of channel state information resources and a first set of entry identifiers associated with the set of channel state information resources, and wherein each entry identifier of the first set of entry identifiers corresponds to a respective entry identifier of a second set of entry identifiers associated with the quasi co-location information.8.The UE of claim 1, wherein the one or more processors are individually or collectively further configured to cause the UE to:receive control signaling indicating a set of transmission configuration indication state identifiers associated with a cell, wherein the second downlink control information indicates respective quasi co-location information corresponding to a respective transmission configuration indication state identifier of the set of transmission configuration indication state identifiers.9.The UE of claim 1, wherein the first downlink control information indicates the set of channel state information resources, and wherein the channel state information report is transmitted at a first time that is based at least in part on a last symbol of the first downlink control information.10.The UE of claim 1, wherein the second downlink control information indicates the set of channel state information resources, and wherein the channel state information report is transmitted at a first time that is based at least in part on a last symbol of the second downlink control information and a quantity of offset symbols.11.A method for wireless communications by a user equipment (UE) , comprising:receiving first downlink control information, wherein the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting;receiving the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, wherein one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based at least in part on the set of channel state information resources;monitoring, based at least in part on the quasi co-location information, the set of channel state information resources; andtransmitting, via the one or more uplink resources and based at least in part on the set of channel state information resources being monitored, the channel state information report.12.The method of claim 11, wherein the first downlink control information is received via a physical downlink control channel, and wherein the second downlink control information is received via a physical downlink shared channel, the second downlink control information received after the first downlink control information.13.The method of claim 11, wherein the second downlink control information further indicates a set of prediction target resources associated with the set of channel state information resources, and wherein the channel state information report comprises one or more measurements associated with the set of prediction target resources.14.The method of claim 11, wherein the presence of the second downlink control information is indicated via a format of the first downlink control information, via a radio network temporary identifier included in the first downlink control information, or both.15.The method of claim 11, wherein the first downlink control information comprises a channel state information request field indicating an aperiodic channel state information trigger state, the aperiodic channel state information trigger state indicating one or more configuration information fields associated with the set of channel state information resources, and wherein at least one of the one or more configuration information fields indicates the presence of the second downlink control information.16.The method of claim 11, wherein the second downlink control information indicates the set of channel state information resources, and wherein the second downlink control information further indicates respective quasi co-location information for a respective channel state information resource of the set of channel state information resources, a respective prediction target resource of a plurality of prediction target resources for a respective channel state information resource of the set of channel state information resources, or both.17.The method of claim 11, wherein the first downlink control information indicates the set of channel state information resources and a first set of entry identifiers associated with the set of channel state information resources, and wherein each entry identifier of the first set of entry identifiers corresponds to a respective entry identifier of a second set of entry identifiers associated with the quasi co-location information.18.The method of claim 11, further comprising:receiving control signaling indicating a set of transmission configuration indication state identifiers associated with a cell, wherein the second downlink control information indicates respective quasi co-location information corresponding to a respective transmission configuration indication state identifier of the set of transmission configuration indication state identifiers.19.The method of claim 11, wherein the first downlink control information indicates the set of channel state information resources, and wherein the channel state information report is transmitted at a first time that is based at least in part on a last symbol of the first downlink control information.20.A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to:receive first downlink control information, wherein the first downlink control information indicates a presence of second downlink control information that is associated with the first downlink control information for jointly triggering channel state information reporting;receive the second downlink control information, the second downlink control information indicating quasi co-location information associated with a set of channel state information resources, wherein one of the first downlink control information or the second downlink control information indicates the set of channel state information resources and an uplink grant scheduling one or more uplink resources for a channel state information report that is based at least in part on the set of channel state information resources;monitor, based at least in part on the quasi co-location information, the set of channel state information resources; andtransmit, via the one or more uplink resources and based at least in part on the set of channel state information resources being monitored, the channel state information report.